June was full of star-studded events and major movie premieres, and as temperatures heated up so did the Instagram and Twitter pictures from some of our favorite stars! Miranda Kerr, Kim Kardashian, and Alicia Keys cooled off in bikinis and shared their sexy photos while other celebrities like Katy Perry, Jessica Alba, and Nicole Richie marked the start of Summer with a vacation! Click through to see our 50 favorite photos and don't forget to follow us on Twitter and Instagram for exciting news and photos!